seafloor

noun

sea·​floor ˈsē-ˌflȯr How to pronounce seafloor (audio)
variants or less commonly sea floor
plural seafloors also sea floors
: the floor of a sea or ocean : seabed
The Earth's crust, in this view, is divided into several immense plates that make up the continents and seafloors, and that all float on a hot, plastic, subterranean "mantle."Walter Sullivan

Examples of seafloor in a Sentence

Recent Examples on the Web
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The carnivorous marine isopods typically scavenge carcasses on the seafloor, but may also eat live prey. Amanda Kooser, Forbes, 14 Jan. 2025 Research equipment on the seafloor near the seamount is part of a vast cable array that provides near-real-time data to Chadwick and others studying the volcano. Kale Williams, Axios, 14 Jan. 2025 There, the ocean-exploration organization Deep has embarked on a multiyear quest to enable scientists to live on the seafloor at depths up to 200 meters for weeks, months, and possibly even years. IEEE Spectrum, 31 Dec. 2024 The remaining cold water on the seafloor then creates an icy current that carries water out to the Irminger Sea – in the Atlantic Ocean. Monica Cull, Discover Magazine, 31 Dec. 2024 See all Example Sentences for seafloor 

Word History

First Known Use

1853, in the meaning defined above

Time Traveler
The first known use of seafloor was in 1853

Dictionary Entries Near seafloor

Cite this Entry

“Seafloor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seafloor. Accessed 1 Feb. 2025.

Kids Definition

seafloor

noun
sea·​floor -ˌflō(ə)r How to pronounce seafloor (audio)
-ˌflȯ(ə)r
: seabed

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